I wouldn't bother with hindering speed. If you're gonna hold it in 3rd and the converter is locked that's as good as it gets. Just haul ass if you want to ASSuming you have an auxiliary cooler, as long as that converter is locked and coolant holds its own the trans will too. I have a trans temp gauge in my 1500 and learned enough about how the trans operates to not bother with a gauge in the 3500. Plus what Pranav said, but I think you already have a WD hitch?
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